This chapter introduces navigational programming concepts. It first discusses the basic housekeeping needed to access a CA IDMS database and then describes the functions used to retrieve data, update data, and test certain conditions. This material is an introduction to navigational programming. A more thorough discussion of selected topics is presented in the chapters Writing a Navigational DML Program; Navigational DML Programming Techniques; and Run Units, Locks, and Database Transactions. For detailed information about individual functions, see the language-specific CA IDMS DML Reference Guide.
This section contains the following topics:
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